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The synovial joints' wide range of motion allows for a variety of movements. Synovial joint movement can be classified into four types: gliding, angular, rotational, and special movement. Gliding occurs when relatively flat bone surfaces pass each other.

• Regular knee flexion involves sliding and rolling between the tibia and femoral condyle surfaces that come into contact.
• The patella shifts from the superior (shallower) to the inferior (deeper) section of the trochlear groove during knee flexion.

• The hip joint, which connects the axial skeleton with the lower extremity, is where the pelvis and femur articulate.
• A ball-and-socket joint, the hip joint offers the stability required to support body weight while allowing for movement.